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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,003,202,375 | 1,375,341 | 1,375,341 |
| 2006 | $1,328,094,351 | 2,090,229 | 2,090,229 |
| 2007 | $1,437,672,434 | 2,619,794 | 2,619,794 |
| 2008 | $1,478,637,682 | 2,186,458 | 2,186,458 |
| 2009 | $1,195,698,765 | 1,661,314 | 1,661,314 |
| 2010 | $1,096,362,384 | 1,881,508 | 1,881,508 |
| 2011 | $985,196,771 | 2,100,855 | 2,100,855 |
Note: Quantity represents Weight in kilograms
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